Abstract
Web-blight of European pear (Pirus communis L. var. sativa de Candolle cultivar ‘Passe Crassen’ and ‘La France’) occurred in Okayama Prefecture, Japan, in July of 1989 and in October of 1993, respectively. The pathogen obtained from infested leaves and sclerotia was identified as Rhizoctonia solani AG1-IB in respect to hyphal anastomosis and culture's types. The common name of Web-blight (“Kumonosubyo” in Japanese) is proposed for this new disease of European pear.
